Have you seen how Cal Tech which doesn’t look at race has double the Asian Americans roughly speaking than many other top schools? Just throwing that stat out there doesn’t prove anything about discrimination.
The number of college aged Asian Americans has been growing much faster than the number of Asian Americans admitted to Ivy League schools, which is quite suggestive of discrimination.
Discrimination is an act by one human against another. You can't tell just from looking at ratio of the broader Asian population and Harvard's Asian population whether or not they're discriminating. Human behavior is subtle, and when OP said that blatant discrimination was happening he was pretty obviously not referring to that ratio as the thing that makes it blatant.
But the idea that Harvard admissions is purely merit based is a joke, so this is very hard to pin down.